Siding, Clapboard

Definition

Clapboard wood siding applied horizontally with the grain running lengthwise over the exterior wall. The quarter-sawn boards taper in thickness for overlapping with the thickest section of the board on the bottom. Clapboard is common in the Northeastern United States. Assumes exterior wall design attributes such as numerous corners, window and door shapes and openings typical of high value homes. Can also include mostly clear grade wood, which contains no knots.